Bless You, mighty solar sorcerers.
L1 to L2 is 240 indeed. I didn't understand the whole ground/neutral thing....
So what I should do is run L1 and L2 and then ground just to ground.
I’ve got the same inverter and I just installed it a couple weeks ago with no wiring issues.
My only issues with the growatt so far has been firmware related which was fixed with an update.
If anything weird or out of the ordinary starts happening a update will probably fix it.
You need to verify that you have a ground!
Ground and neutral are two different wires.
Neutral is usually white in the USA.
Ground is usually a bare copper wire in the USA.
First things first.
Locate the breaker in your service panel for this dryer outlet.
Next follow the wiring off of the breaker.
Verify what wiring you have.
it’s going to be ONE of two scenarios.
L1-L2-N which is worst case scenario for your inverter. Transformer pops and sizzles.
Or L1-L2-G which is unlikely.
If you’re getting sparks I think it’s safe to say you have option 1 -which is L1-L2-N
You need L1-L2-G coming from your electrical service panel.
Your service panel should have an earth ground.
I would run a dedicated line from a new double pole breaker from your service panel directly into the growatt.
Now once again. This new dedicated line will have a neutral…don’t hook it up.
Simple as that.
As long as that white neutral wire doesn’t go into the inverter you should be okay.
L1-L2-G
Red-black-bare copper.
Here’s where it gets a little more in depth.
Coming out of your inverter….you will have a neutral for your AC output.
Then you can use L1-L2-N to power a sub panel.
Lastly and just to be extra clear.
AC INPUT=NO NEUTRAL NEEDED
AC OUTPUT=NEUTRAL NEEDED
